Floor selector for an elevator car

ABSTRACT

A floor selector adaptable for use in an elevator system which uses binary counters and comparators to provide a continuous, a discrete, and a serial advanced car position signal. The continuous and discrete advanced car position signals are used to generate an equality signal when the car must initiate deceleration in order to stop at a floor with a predetermined deceleration pattern, and the serial advanced car position signal is used to determine a coincidence of a call for service for that floor. A coincidence registered by the time the equality signal is generated initiates a request for deceleration.

[ Aug. 7, 1973 FLOOR SELECTOR FOR AN ELEVATOR CAR [75] inventors:Charles L. Winkler, Pittsburgh, Pa.;

Andre Wavre, Bevaix, Switzerland [73] Assigneez' Westinghouse ElectricCorporation,

Pittsburgh, Pa.

221 Filed: Mayl7, 1972 21 Appl. No.1 254,007

Primary Examiner-Bernard A. Gilheany Assistant Examiner-W. E. Duncanson,Jr.

Attorney-A. TL Strat t oHTDonaId i. Lackey et al.

[57] ABSTRACT A floor selector adaptable for use in an elevator systemwhich uses binary counters and comparators to provide a continuous, adiscrete, and a serial advanced car position signal. The continuous anddiscrete advanced car position signals are used to generate an equalitysignal if 3' when the car must initiate deceleration in order to stop d187 29 at a floor with a predetermined deceleration pattern, le 0 careand the serial advanced car position signal is used to 56 R t C" ddetermine a coincidence of a call for service for that I 1 e e floor. Acoincidence registered by the time the equality UNITED STATES PATENTSsignal is generated initiates a request for deceleration. 3,570,6303/1971 Voight et al. 187/29 3,589,474 6/1971 Wavre 187/29 16 Claims, 23PS 8" DISCRETE I 72 ADVANCED CAR 82 1 POSITION 80 5353??? COMPARATORTIMING SEEIAL ADVANCED I R POSITION INDEX 74 M M Y I SIGN/t1 E 0R EQIZNJI 78 76 84' CALLS I 7 COMMANDS INDEXER COMPARATOR LOGIC A c L RATION &

IiCEL ATION REQLESTS CONTINUOUS LANTERN a CALL I gg RESET SIGNALSPOSITION MI (7O 3 4 DISTANCE REVERSIBLE PULSES COUNTER VFLOOR SELECTORPMENTEW 3.150.850

TIMWG 01 [1F 19 CORRIDOR CALL CONTROL 20 I ---{MOTOR|L- b FIG. I

TIMING h LANDING K UMIT CAR CALL CONTROL fi HATCHWAY 52 TIMING 34 36 Tox 1 I A v 44 000R FLOOR HALL Y1" CAR*OPERATOR SELECTOR LANTERNs 5 DOOR2nd LANDING OPERATOR 54 5e MOTOR SPEED 4o "GfiEEIE%R J DISTANCE 24 El-J-PuLsEs Is! LANDING I L S E AI Q 64 i9 28 V 1 PULSE DETECTOR DISCRETE I72 ADVANCED CAR 2 k POSITION I {80 r SERIAL AOvANCEO .lNDEX MEMOR J74CAR POSITION SIGIIA EQIz-L FIG. 2

78 4x ACAIELS I 76 E02 --cOMMANOs INDEXER COMPARATOR 7 LOGIC ,AccELRATION a DECEL ATION RE uEsTs CONTINUOUS LANTERN & CALL ADVANCED RESETSIGNALS POSITION TIMTNG 34 AEEEE ggggi'gi FLOOR SELECTOR PATENTEDAuB 1ma SHEET 0% 0F 19 3 mmox w Muddudq x4233 PATENTED sum 05 0F 19 ZQLOm v9mOm m Om mwhznoo 20 mm mmm g i l mm kwmwm ZOFFOmROF PATENTEDAuc 7am3750.850

SHEET 08 0F 19 00mm LU 8a vm 3 Y fi zwu w2z$5 5 mm 6%.3 2209 65 33 1209:2 C w58:20:58 Tl $080259 n u n n u n u u n n u n n n n n $5 36 mommoo zzoo n E E n 1 SZ SmOQEOQQD C C C fiQm omS mozoumwji 095a @2253 u hn u n 20.555 oziz m 1 o i0;mNTNTNTNTNTNTNTi o- 2 m w; 32?. T; oToToToToToToTg-oo oo n on zo .cwoa oz zz om m N T VAVAQMFNFA\.- wnom 2597% 9?; o l i L i i L Li zoEmoQ mood PATENTEUMIE 1 ms 3,750,850

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PAIENTEUIIUI; 1 Ian 3. 750.850

SHEEI 10 0f I9 mmm (DNCDQO FLOOR CORRIDOR CALLS cAR CAN CONSIDER WHENTRAVELLING IN A GIVEN DIRECTION FIG. II

PAIENIEU 7973 saw 11 or 19 FIG '2 SPEED PATTERN GENERATOR 4s SUMMING 54@99 Row A OGu sRAT w W AGPAG A UPTF? START) Ace sPsz 54 A I MXVM M TIMERAMP ANALOG Ace GENERATOR SWITCH (544 ACC 546 TRsw .pflgg REVERSIBLEDISTANCE OsAN ANALOG OLE cOuNTER B SLOWDOWN SWITCH u ANALOG 063w 556SW'TCH J HTI R R rHTAN ANALOG SWITCH ANALOG 1 553 SWITCH j DOWN J 56055s MINA\ TSAN TERMINAL ANALOG PLSDP SLOWDOWN SWITCH STAE 552 TSD 1T0NLlG DRIVER SPSW PULSE |L. DETECTOR MOTOR TOVSP 0L2 DCL To TAGH BOTTOM vL O sTART(Acc O DG U DGD 575' E? Acc SPSI *OSPSZ PATENTEUAU; 7 ms sum 12or 19 VQBSE Pmmzows H913 sum 13 or 19 m 0 TO 8 l I I I I I I I l I l I II I I I I I l l II E 1 W m m w I am as DD m N M I l l l I I I l I l I ll l l l I I I l I I ll 9 WI I l l I I l I l I l I .ll 0 8 m 7 T 4 i n mI l l I I I I l I l I I I l I l I |-N llll ll 8 QVL 64 a 3 7 4 A I 7 3 R7 E m RM 6 ME I 0 m a h n P 0 m m my U5 Q m P A C U C5 6 6 S 8 C S 5 AFIG. |5A

Fmumws mu VOLTAGE I+I INPUT TO FILTER AMPLIFIER OUT PUT VOLTAGE v OFFILTER AMPLIFIER (V55) Vl O VOLTAGE I+ INPUT TO FILTER AMPLIFIER VOLTAGEOUTPUT OF 2 FILTER VI AMPLIFIER FIG. 20A

TIME

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FIG. 20B

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1. A floor selector adaptable for use in an elevator system including astructure having a plurality of floors, and a car mounted for movementrelative to the structure to serve the floors, said floor selectorcomprising: first means providing a first advanced car position signalresponsive to movement of the car which indicates where in the structurethe car would stop if decelerated according to a predetermineddeceleration schedule; second means responsive to said first means andthe locations of the floors relative to the structure, said second meansproviding an equality signal for a floor ahead of the direction of cartravel when the car reaches a point where deceleration must be initiatedto stop at that floor, third means providing a second advanced carposition signal which indicates the closest floor ahead of car directiontravel at which the car may stop, fourth means continuously scanning anddividing successive predetermined time periods into a plurality ofintervals, with at least certain of the intervals of each time periodcorresponding to floors of the structure, said fourth means providing asignal which identifies the position of each interval in the time periodas each time period is scanned, fifth means responsive to said third andfourth means, providing a third advanced car position signal during theinterval of each time period which represents the floor of the secondadvanced car position signal, sixth means responsive to The thirdadvanced car position signal and to calls for service which the car isconditioned to serve, said sixth means providing a coincident signalwhen a call for service is registered for the floor of the thirdadvanced car position signal, and seventh means responsive to saidsecond and sixth means providing a deceleration request signal to stopthe car at a specific floor when an equality signal for that floor isreceived following a coincident signal indicating a request for serviceat that floor.
 2. The floor selector of claim 1 including eighth meansproviding an index signal for the third means, to change the secondadvanced car position signal to indicate the next floor at which the carmay stop, in the absence of a request to stop the car when the equalitysignal is generated.
 3. The floor selector of claim 1 wherein the secondmeans includes memory means which contains the exact locations of thefloors relative to the structure, said memory means being addressed bythe second advanced car position signal to output the location of thefloor identified by the second advanced car position signal.
 4. Thefloor selector of claim 3 wherein the second advanced car positionsignal is a binary number containing the number of bits necessary toidentify the total number of floors in the structure, and the output ofthe memory means in a binary number containing the number of bitsnecessary to locate each floor relative to the structure in terms of astandard increment of displacement from a predetermined location in thestructure.
 5. The floor selector of claim 1 wherein the first meansincludes a reversible binary counter adapted to receive and count pulsesfrom pulse generating means which generates pulses for each standardincrement of displacement of the car relative to the structure.
 6. Thefloor selector of claim 5 wherein the second means includes memory meansaddressed by the second advanced car position signal which outputs thebinary number corresponding to the location of the floor relative to thestructure which is represented by the second advanced car positionsignal, said second means providing the equality signal when the binaryoutput signals of the reversible binary counter and memory means areequal.
 7. The floor selector of claim 1 wherein the third and fourthmeans are binary counters, and the fifth means is a bit-by-bitcomparator, with the fifth means providing the third advanced carposition signal when the bianry signals of the third and fourth meansare equal.
 8. The floor selector of claim 7 wherein the fourth meansdivides each time period into more intervals than floors in thestructure, and including memory means responsive to said fourth meansfor outputting signals which identify the intervals which are notassociated with floors.
 9. The floor selector of claim 1 wherein thecoincident signal provided by the sixth means is stored by the seventhmeans, and the equality signal provided by the second means initiatesthe deceleration request signal by the seventh means when a coincidentsignal is stored in the seventh means at the time the equality signal isprovided.
 10. A floor selector adaptable for use in an elevator systemincluding a structure having a plurality of floors, and a car mountedfor movement relative to the structure to serve the floors, said floorselector comprising: first counting means adapted to count pulsesgenerated in response to standard increments of displacement of the carrelative to the structure, said first counting means being operative toaccumulate a count representing the continuous advanced car position,second counting means providing a count representing the discreteadvanced car position, indicating the floor at which the car can stopaccording to a predetermined deceleration pattern, third counting meanswhich scans and divides a predetermined time period into a plurality ofintervals, with at least certain of the intervals representing thefloors of the structure, first comparator means responsive to saidsecond and third counting means, providing a serial advanced carposition signal during the interval of each time period which representsthe floor of the discrete advanced car position, call selecting meansresponsive to calls for service which the car is conditioned to serveand to the serial advanced car position, providing a coincident signalwhen the floor of the serial advanced car position and a call forservice for that floor coincide, memory means addressed by said secondcounting means, said memory means providing a count which identifies thelocation of the floor, relative to the structure, represented by thediscrete advanced car position signal, second comparator meansresponsive to said memory means and to said first counting means, saidsecond comparator means providing an equality signal when the count ofsaid first counting means and said memory means are equal, andsynchronizer means responsive to said second comparator means and saidcall selecting means, storing a coincident signal provided by said callselecting means, and providing a deceleration request signal when acoincident signal has been stored at the time the equality signal isprovided by said second comparator means.
 11. The floor selector ofclaim 10 including indexing means which provides an indexing signal forthe second counting means in response to the generation of an equalitysignal in the absence of a stored coincident signal in the synchronizermeans, said indexing signal changing the discrete advanced car positionsignal to represent the next floor at which the car can stop.
 12. Thefloor selector of claim 10 wherein the second comparison means providesan inferiority signal when the continuous advanced car position count isless than the count of the memory means, the equality signal when theyare equal, and a superiority signal when the continuous advanced carposition count is greater than the count of the memory means, andincluding indexing means for incrementing by one the floor representedby the discrete advanced car position when the superiority signal isgenerated in response to upward travel by the car, and for decrementingby one the floor represented by the discrete advanced car position whenthe inferiority signal is generated in response to downward travel ofthe car.
 13. The floor selector of claim 10 including decoding meanswhich provides a terminal slowdown signal when the continuous advancedcar position count represents a terminal floor.
 14. The floor selectorof claim 10 including means for resetting the first and second counterswhen the car is at at least a certain one of the floors of thestructure.
 15. The floor selector of claim 10 wherein the third countingmeans divides each time period into more intervals than there are floorsin the structure, and including second memory means which identifies theintervals of each scan which do not represent floors.
 16. The floorselector of claim 10 including car call means and corridor call means,said car call means and corridor call means providing car calls andcorridor calls in serial form for the call selecting means, synchronizedwith the third counting means to direct call information to the properintervals of each time period.